Home / 13,131.92-18,116.30-8,881.48

Finding the Fourth Proportional to 13,131.92, 18,116.30 and 8,881.48

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Solution

The fourth proportional to 13,131.92, 18,116.30 and 8,881.48 is: 12,252.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.92 : 18,116.30 = 8,881.48 : x
  2. Step 2: Convert to fraction form
    13,131.92/18,116.30 = 8,881.48/x
  3. Step 3: Cross multiply
    13,131.92x = 18,116.30 × 8,881.48
  4. Step 4: Simplify right side
    13,131.92x = 160,899,556.12
  5. Step 5: Solve for x
    x = 160,899,556.12/13,131.92
  6. Step 6: Final answer
    x = 12,252.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.